I'm no expert on cycling shoes Teamrocket, but as a guess with no photo I would say they are to go on the inside sole over the hole where you screw in the cleats. This makes the soles of the shoes fully waterproof.

I'm no expert on cycling shoes Teamrocket, but as a guess with no photo I would say they are to go on the inside sole over the hole where you screw in the cleats. This makes the soles of the shoes fully waterproof.